Synthesis and luminescent characteristics of europium dopants in SiO2/Gd2O3 core/shell scintillating nanoparticles

Tseng, Teng-Kuan; Choi, Jihun; Davidson, Mark R.; Holloway, Paul H.

doi:10.1039/c0jm00941e

Cited by 23 publications

(9 citation statements)

References 35 publications

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“…There are sufficient researches on core-shell composite materials with SiO 2 as the core and inorganic materials as the cladding layer [ 39 , 40 , 41 ]. However, the inorganic materials usually exhibited weak luminescence property and restricted their practical application.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

Feng

Bao

et al. 2019

Nanomaterials

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Two novel core-shell composites SiO2@PMDA-Si-Tb, SiO2@PMDA-Si-Tb-phen with SiO2 as the core and terbium organic complex as the shell, were successfully synthesized. The terbium ion was coordinated with organic ligand forming terbium organic complex in the shell layer. The bi-functional organosilane ((HOOC)2C6H2(CONH(CH2)3Si(OCH2CH3)3)2 (abbreviated as PMDA-Si) was used as the first ligand and phen as the second ligand. Furthermore, the silica-modified SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2 core-shell-shell composites were also synthesized by sol-gel chemical route. An amorphous silica shell was coated around the SiO2@PMDA-Si-Tb and SiO2@PMDA-Si-Tb-phen core-shell composites. The core-shell and core-shell-shell composites both exhibited excellent luminescence in solid state. The luminescence of core-shell-shell composites was stronger than that of core-shell composites. Meanwhile, an improved luminescence stability property for the core-shell-shell composites was found in the aqueous solution. The core-shell-shell composites exhibited bright luminescence, high stability, long lifetime, and good solubility, which may present potential applications in the bio-medical field.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

Feng

Bao

et al. 2019

Nanomaterials

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“…Nowadays, there is sufficient research on core-shell nanostructured composite materials with SiO 2 as core and inorganic material as cladding layer [38][39][40][41]. However, the rare earth organic complexes as cladding layer have not been extensively involved.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photoluminescence properties of silica-modified SiO ₂ @ANA-Si-Tb@SiO ₂ , SiO ₂ @ANA-Si-Tb-L@SiO ₂ core–shell–shell nanostructured composites

Feng

Bao

et al. 2019

R. Soc. open sci.

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Three novel core–shell nanostructured composites SiO 2 @ANA-Si-Tb, SiO 2 @ANA-Si-Tb-L (L = second ligand) with SiO 2 as the core and terbium organic complex as the shell were successfully synthesized. The core and shell were connected together by covalent bonds. The terbium ion was coordinated with organic ligand-forming terbium organic complex in the shell layer. The organosilane (HOOCC 5 H 4 NN(CONH(CH 2 ) 3 Si(OCH 2 CH 3 ) 3 ) 2 (abbreviated as ANA-Si) was used as the first ligand and 1,10-phenanthroline (phen) or 2-thenoyltrifluoroacetone (TTA) was used as the second ligand. Furthermore, silica-modified SiO 2 @ANA-Si-Tb@SiO 2 , SiO 2 @ANA-Si-Tb-L@SiO 2 core–shell–shell nanostructured composites were also synthesized by sol–gel chemical route, which involved the hydrolysis and polycondensation processes of tetraethoxysilane (TEOS) using cetyltrimethyl ammonium bromide (CTAB) as a surface-active agent. An amorphous silica shell was coated around the SiO 2 @ANA-Si-Tb, SiO 2 @ANA-Si-Tb-L core–shell nanostructured composites. The core–shell and core–shell–shell nanostructured composites exhibited excellent luminescence in the solid state. Meanwhile, an improved luminescent stability property of the core–shell–shell nanostructured composites was observed for the aqueous solution. This type of core–shell–shell nanostructured composites exhibited bright luminescence, high stability and good solubility, which may present potential applications in the fields of optoelectronic devices, bio-imaging, medical diagnosis and study on the structure of function composite materials.

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“…There are sufficient researches on core-shell composite materials with SiO2 as the core and inorganic materials as cladding layer [39][40][41]. However, the inorganic materials usually exhibited weak luminescence property and restricted their practical application.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

Feng¹,

Li²,

Bao³

et al. 2019

Preprint

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Two novel core-shell composites SiO2@PMDA-Si-Tb, SiO2@PMDA-Si-Tb-phen with SiO2 as the core and terbium organic complex as the shell, were successfully synthesized. The terbium ion was coordinated with organic ligand forming terbium organic complex in the shell layer. The bi-functional organosilane ((HOOC)2C6H2(CONH(CH2)3Si(OCH2CH3)3)2 (abbreviated as PMDA-Si) was used as the first ligand and phen as the second ligand. Furthermore, the silica-modified SiO2@PMDA-Si-Tb@SiO2, SiO2@PMDA-Si-Tb-phen@SiO2 core-shell-shell composites were also synthesized by sol–gel chemical route. An amorphous silica shell was coated around the SiO2@PMDA-Si-Tb and SiO2@PMDA-Si-Tb-phen core-shell composites. The core-shell and core-shell-shell composites both exhibited excellent luminescence in solid state. The luminescence of core-shell-shell composites was stronger than that of core-shell composites. Meanwhile, an improved luminescence stability property for the core-shell-shell composites was found in the aqueous solution. The core-shell-shell composites exhibited bright luminescence, high stability, long lifetime, and good solubility, which may present potential applications in the field of bio-medical.

show abstract

Synthesis and luminescent characteristics of europium dopants in SiO2/Gd2O3 core/shell scintillating nanoparticles

Cited by 23 publications

References 35 publications

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

Synthesis and photoluminescence properties of silica-modified SiO ₂ @ANA-Si-Tb@SiO ₂ , SiO ₂ @ANA-Si-Tb-L@SiO ₂ core–shell–shell nanostructured composites

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

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Synthesis and luminescent characteristics of europium dopants in SiO2/Gd2O3 core/shell scintillating nanoparticles

Cited by 23 publications

References 35 publications

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

Synthesis and photoluminescence properties of silica-modified SiO 2 @ANA-Si-Tb@SiO 2 , SiO 2 @ANA-Si-Tb-L@SiO 2 core–shell–shell nanostructured composites

Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

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Synthesis and photoluminescence properties of silica-modified SiO ₂ @ANA-Si-Tb@SiO ₂ , SiO ₂ @ANA-Si-Tb-L@SiO ₂ core–shell–shell nanostructured composites